Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 37: Poster III

Q 37.5: Poster

Wednesday, March 13, 2024, 17:00–19:00, Tent B

A versatile algorithm for ion configuration determination in linear ion crystals consisting of mixed atomic and molecular ion species — •Stefan Walser, Brandon Furey, Zhenlin Wu, Rene Nardi, Mariano Isaza Monslave, Elyas Mattivi, and Philipp Schindler — Insitut für Experimentalphysik, Universität Innsbruck

Trapped atomic ions enabled a variety of developments in quantum information and computation in the last two decades. Recently efforts have been made to extend this well studied platform to molecular ions. The latter's additional degrees of freedom might provide a more resource efficient toolkit for quantum computational processes. Therefore, atomic logic ions are co-trapped with molecular ions for sympathetic cooling, state preparation, and readout. Often molecular ions cannot be observed directly but their presence is indicated by vacancies in trapped ion chains. Thus, new methods to rapidly and precisely identify and locate molecular ions are required. We present a featureful algorithm based on a custom peak finder and template fitting which processes image data of the ion crystal. It reliably counts bright logic and dark molecular ions and measures the ion configuration in real time on ms timescales. This provides a versatile basis for automated in-time decision making in various novel experiments.

Keywords: ion trapping; molecular ions; logic spectroscopy; ion configuration detection; mixed ion species